1. NSF Sci. Fac. Fellow and Grad. Student; Civ. Engrg., Univ. of New Mexico, Albuquerque, NM; currently on sabbatical leave from the Coll. of Engrg., Loyola Univ., Los Angeles, CA, Mexico
2. Prof. of Civ. Engrg., Univ. of New Mexico, Albuquerque, NM, Mexico